I was a group Manager until yesterday. Since Ethan is very busy with his other projects and I am fully focused on CCDE preparation, training and helping the people who are interested in CCDE and network design, He decided to left the group ownership to me.

In order to protect the group from spam , we have been asking a reason for participation and I will continue in the same way. Please indicate your reason, join the group and start to get benefits of all network design and CCDE related topic !